第4

作者: _弓长_大人 | 来源:发表于2018-05-15 16:19 被阅读19次

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public class MainActivity extends AppCompatActivity {

EditText editText;
EditText editText2;
Button button;

RequestQueue queue;
JSONObject jsonArray2 = new JSONObject();



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    editText=findViewById(R.id.editText);
    editText2=findViewById(R.id.editText2);
    button=findViewById(R.id.button);

    queue= Volley.newRequestQueue(this);

}


public  void Click2(View view){


    Intent intent=new Intent(MainActivity.this,Main2Activity.class);
    startActivity(intent);

}
public  void Click(View view){


    AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
    builder.setTitle("123456");
    builder.setMessage("123456");
    builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
        }
    });
    builder.show();

    String base_url="";
    String name=editText.getText().toString();
    String  pwd=editText2.getText().toString();

    String url=base_url+"?"+"user="+name+"&pwd="+pwd;

    JsonObjectRequest request = new JsonObjectRequest(url, new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {
            jsonArray2 = response;
            //myAdapter.notifyDataSetChanged();
            Log.d("test",response.toString());

           /* try {
                /*
                if(jsonArray2.getString("result").equals("OK")){

                    Intent intent=new Intent(loginActivity.this,MainActivity.class);
                    startActivity(intent);
                }*/

            //     Intent intent=new Intent(loginActivity.this,MainActivity.class);
            //    startActivity(intent);


            AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
            builder.setTitle("123456");
            builder.setMessage("123456");
            //builder.setPositiveButton("ok",nil)
            builder.show();

        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

        }
    });

    //数据添加到队列
    queue.add(request);
}

}

第二

public class Main2Activity extends AppCompatActivity {

private static final String TAG = "Main2Activity";
ListView listView;

JSONArray jsonArray = new JSONArray();
JSONObject jsonArray2 = new JSONObject();
MyAdapter myAdapter;
RequestQueue queue;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main2);

    listView = findViewById(R.id.listView);

    //自定制适配器
    myAdapter = new MyAdapter();
    listView.setAdapter(myAdapter);

    //新建队列
    queue = Volley.newRequestQueue(this);
    downloadJsonData();

    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            try{
                JSONObject jsonObject = jsonArray.getJSONObject(position);

                //界面传参
                Intent intent = new Intent(Main2Activity.this,Main3Activity.class);
                intent.putExtra("student",jsonObject.toString());
                startActivity(intent);
            }catch (JSONException e){
                e.printStackTrace();
            }
        }
    });


}



public void downloadJsonData(){
    JsonArrayRequest request = new JsonArrayRequest("http://10.0.1.2/piclist.php", new Response.Listener<JSONArray>() {
        @Override
        public void onResponse(JSONArray response) {
            jsonArray = response;
            myAdapter.notifyDataSetChanged();
        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

        }
    });

    //数据添加到队列
    queue.add(request);
}



class MyAdapter extends BaseAdapter {

    @Override
    public int getCount() {
        return jsonArray.length();
    }

    @Override
    public Object getItem(int position) {
        try{
            return jsonArray.getJSONObject(position).toString();
        }catch (JSONException e){
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if(convertView == null){
            convertView = LayoutInflater.from(Main2Activity.this).inflate(R.layout.stulayout,null);
            viewHolder = new ViewHolder();
            viewHolder.textView_name = convertView.findViewById(R.id.textView_name);
            viewHolder.textView_stuno = convertView.findViewById(R.id.textView_stuno);
            viewHolder.textView_gender = convertView.findViewById(R.id.textView_gender);
            convertView.setTag(viewHolder);
        }else{
            viewHolder = (ViewHolder)convertView.getTag();
        }
        try{
            JSONObject jsonObject = jsonArray.getJSONObject(position);
            viewHolder.textView_name.setText(jsonObject.getString("stuName"));
            viewHolder.textView_stuno.setText(jsonObject.getString("stuNo"));
            viewHolder.textView_gender.setText(jsonObject.getString("stuGender"));
        }catch (JSONException e){
            e.printStackTrace();
        }


        return convertView;
    }

    class ViewHolder{
        TextView textView_name,textView_stuno,textView_gender;
    }
}

}

第三

public class Main3Activity extends AppCompatActivity {

TextView textView_name,textView_stuno,textView_gender,textView_class;
ImageView imageView;
RequestQueue queue;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main3);

    textView_name = findViewById(R.id.textView_name);
    textView_stuno = findViewById(R.id.textView_stuno);
    textView_gender = findViewById(R.id.textView_gender);
    textView_class = findViewById(R.id.textView_class);
    imageView = findViewById(R.id.imageView);

    try{
        JSONObject jsonObject = new JSONObject(getIntent().getStringExtra("student"));
        textView_name.setText(jsonObject.getString("stuName"));
        textView_stuno.setText(jsonObject.getString("stuno"));
        textView_gender.setText(jsonObject.getString("stuGender"));
        textView_class.setText(jsonObject.getString("stuClass"));

        queue = Volley.newRequestQueue(this);

        ImageRequest request = new ImageRequest("http://10.0.1.2/" + jsonObject.getString("imagePath"), new Response.Listener<Bitmap>() {
            @Override
            public void onResponse(Bitmap response) {
                imageView.setImageBitmap(response);
            }
        }, 0, 0, ImageView.ScaleType.CENTER_INSIDE, Bitmap.Config.RGB_565, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {

            }
        });
        queue.add(request);
    }catch (JSONException e){
        e.printStackTrace();
    }

}

}

xml 111111111

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.bluegrey.mynewadapter.MainActivity">

<EditText
    android:id="@+id/editText"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginBottom="29dp"
    android:layout_marginEnd="33dp"
    android:layout_marginStart="33dp"
    android:layout_marginTop="31dp"
    android:ems="10"
    android:hint="姓名"
    android:inputType="textPersonName"
    app:layout_constraintBottom_toTopOf="@+id/editText2"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<EditText
    android:id="@+id/editText2"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginBottom="73dp"
    android:layout_marginEnd="34dp"
    android:layout_marginStart="34dp"
    android:ems="10"
    android:hint="密码"
    android:inputType="textWebPassword"
    app:layout_constraintBottom_toTopOf="@+id/button"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/editText" />

<Button
    android:id="@+id/button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="16dp"
    android:layout_marginStart="90dp"
    android:onClick="Click"
    android:text="LIGON"
    app:layout_constraintBottom_toTopOf="@+id/button2"
    app:layout_constraintStart_toStartOf="@+id/editText2"
    app:layout_constraintTop_toBottomOf="@+id/editText2" />

<Button
    android:id="@+id/button2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="168dp"
    android:onClick="Click2"
    android:text="Button"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintStart_toStartOf="@+id/button"
    app:layout_constraintTop_toBottomOf="@+id/button" />

</android.support.constraint.ConstraintLayout>

xml 2

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.bluegrey.mynewadapter.Main2Activity">

<ListView
    android:id="@+id/listView"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginLeft="8dp"
    android:layout_marginRight="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

xml 3

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.bluegrey.mynewadapter.Main3Activity">

<TextView
    android:id="@+id/textView_name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="51dp"
    android:text="TextView"
    android:textSize="24dp"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<TextView
    android:id="@+id/textView_stuno"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="64dp"
    android:text="TextView"
    android:textSize="24dp"
    app:layout_constraintEnd_toEndOf="@+id/textView_class"
    app:layout_constraintStart_toStartOf="@+id/textView_class"
    app:layout_constraintTop_toTopOf="parent" />

<TextView
    android:id="@+id/textView_gender"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="155dp"
    android:text="TextView"
    android:textSize="24dp"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<TextView
    android:id="@+id/textView_class"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="24dp"
    android:layout_marginEnd="51dp"
    android:layout_marginRight="51dp"
    android:text="TextView"
    android:textSize="24dp"
    app:layout_constraintBottom_toTopOf="@+id/imageView"
    app:layout_constraintEnd_toEndOf="parent" />

<ImageView
    android:id="@+id/imageView"
    android:layout_width="0dp"
    android:layout_height="231dp"
    android:layout_marginEnd="37dp"
    android:layout_marginLeft="46dp"
    android:layout_marginRight="37dp"
    android:layout_marginStart="46dp"
    android:layout_marginTop="12dp"
    app:layout_constraintEnd_toEndOf="@+id/textView_class"
    app:layout_constraintStart_toStartOf="@+id/textView_gender"
    app:layout_constraintTop_toBottomOf="@+id/textView_gender"
    app:srcCompat="@mipmap/ic_launcher" />

</android.support.constraint.ConstraintLayout>

stu xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
    android:id="@+id/textView_name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="20dp"
    android:textColor="#00ff00"
    android:text="TextView" />
<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <TextView
        android:id="@+id/textView_stuno"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView_gender"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />
</LinearLayout>

</LinearLayout>

android:orientation="vertical">

<TextView
    android:id="@+id/textView_name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView"
    android:textColor="@color/colorPrimary"
    android:textSize="20dp" />

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/textView_stuno"
        android:layout_width="166dp"
        android:layout_height="wrap_content"
        android:text="TextView"
        android:textColor="@color/colorAccent" />

    <TextView
        android:id="@+id/textView_gender"
        android:layout_width="185dp"
        android:layout_height="wrap_content"
        android:text="TextView"
        android:textColor="@color/colorAccent" />
</LinearLayout>