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多activity界面跳转并传递数据
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:tools="http://schemas.android.com/tools" 4 android:id="@+id/activity_main" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 android:orientation="vertical" 8 tools:context="com.example.zhoushasha.myapplication.MainActivity"> 9 10 <EditText 11 android:id="@+id/et1" 12 android:layout_width="wrap_content" 13 android:layout_height="wrap_content" 14 android:hint="请输入姓名" 15 android:layout_gravity="center" 16 android:textSize="25dp" 17 /> 18 <View 19 android:layout_width="match_parent" 20 android:layout_height="1dp"/> 21 <LinearLayout 22 android:layout_width="match_parent" 23 android:layout_height="wrap_content"> 24 <Button 25 android:id="@+id/bt1" 26 android:layout_weight="1" 27 android:onClick="onClick" 28 android:layout_width="wrap_content" 29 android:layout_height="wrap_content" 30 android:text="进入评估" 31 android:textSize="25dp"/> 32 <Button 33 android:id="@+id/bt2" 34 android:layout_weight="1" 35 android:onClick="onClick" 36 android:layout_width="wrap_content" 37 android:layout_height="wrap_content" 38 android:text="退出" 39 android:textSize="25dp"/> 40 </LinearLayout> 41 <TextView 42 android:id="@+id/tv1" 43 android:layout_gravity="center_horizontal" 44 android:layout_width="wrap_content" 45 android:layout_height="wrap_content" 46 android:text="评论结果" 47 android:textSize="25dp"/> 48 </LinearLayout>
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:tools="http://schemas.android.com/tools" 4 android:id="@+id/activity_main2" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 android:orientation="vertical" 8 tools:context="com.example.zhoushasha.myapplication.Main2Activity"> 9 <TextView 10 android:id="@+id/tv1" 11 android:layout_width="match_parent" 12 android:layout_height="wrap_content" 13 android:text="有没有信心？" 14 android:textSize="54dp" /> 15 <LinearLayout 16 android:layout_width="match_parent" 17 android:layout_height="wrap_content" 18 android:orientation="vertical" /> 19 20 <Button 21 android:id="@+id/bt1" 22 android:layout_width="match_parent" 23 android:layout_height="wrap_content" 24 android:text="有" 25 android:textSize="25dp"/> 26 27 <Button 28 android:id="@+id/bt2" 29 android:layout_width="match_parent" 30 android:layout_height="wrap_content" 31 android:onClick="onClick" 32 android:text="没有" 33 android:textSize="25dp"/> 34 </LinearLayout>
第一个activity的跳转功能实现代码
1 package com.example.zhoushasha.myapplication; 2 3 import android.content.Context; 4 import android.content.Intent; 5 import android.support.v7.app.AppCompatActivity; 6 import android.os.Bundle; 7 import android.text.TextUtils; 8 import android.view.View; 9 import android.widget.Button; 10 import android.widget.EditText; 11 import android.widget.TextView; 12 import android.widget.Toast; 13 14 import static android.R.attr.data; 15 import static android.R.attr.name; 16 import static android.R.attr.revisionCode; 17 18 public class MainActivity extends AppCompatActivity { 19 private Button bt1; 20 private Button bt2; 21 private Context mContent; 22 private EditText et1; 23 private TextView tv1; 24 public static final int REQUEST_CODE = 1000; 25 public static final int RESULT_CODE = 1001; 26 27 @Override 28 protected void onCreate(Bundle savedInstanceState) { 29 super.onCreate(savedInstanceState); 30 setContentView(R.layout.activity_main); 31 et1 = (EditText) findViewById(R.id.et1); 32 bt1 = (Button) findViewById(R.id.bt1); 33 bt2 = (Button) findViewById(R.id.bt2); 34 tv1 = (TextView) findViewById(R.id.tv1); 35 36 } 37 public void onClick(View view) { 38 switch (view.getId()) { 39 case R.id.bt1: 40 setBt1(); 41 break; 42 } 43 } 44 45 private void setBt1() { 46 Intent intent = new Intent(MainActivity.this, Main2Activity.class); 47 48 if (TextUtils.isEmpty(et1.getText().toString())) { 49 Toast.makeText(MainActivity.this, "输入名称不能为空", Toast.LENGTH_SHORT).show(); 50 return; 51 } 52 Intent mIntent = new Intent(MainActivity.this, Main2Activity.class); 53 mIntent.putExtra("intent", et1.getText().toString().trim()); 54 startActivityForResult(mIntent, 1000); 55 } 56 57 @Override 58 protected void onActivityResult(int requestCode, int resultCold, Intent result) { 59 MainActivity.super.onActivityResult(requestCode, resultCold, result); 60 if (requestCode == REQUEST_CODE && resultCold == RESULT_CODE) { 61 String result_value = http://www.mamicode.com/result.getStringExtra("result"); 62 tv1.setText("评论内容返回为：" + result_value); 63 } 64 } 65
第二个activity的实现传回数据的代码
1 package com.example.zhoushasha.myapplication; 2 3 import android.content.Intent; 4 import android.support.v7.app.AppCompatActivity; 5 import android.os.Bundle; 6 import android.view.View; 7 import android.widget.Button; 8 import android.widget.TextView; 9 10 public class Main2Activity extends AppCompatActivity { 11 private TextView tv1; 12 private Button bt1; 13 private Button bt2; 14 15 @Override 16 protected void onCreate(Bundle savedInstanceState) { 17 super.onCreate(savedInstanceState); 18 setContentView(R.layout.activity_main2); 19 tv1= (TextView) findViewById(R.id.tv1); 20 String userName = tv1.getText().toString(); 21 bt1 = (Button) findViewById(R.id.bt1); 22 bt1.setOnClickListener(new View.OnClickListener() { 23 @Override 24 public void onClick(View view) { 25 String result = "有"; 26 Intent intent = new Intent(); 27 intent.putExtra("result",result); 28 setResult(MainActivity.RESULT_CODE,intent); 29 finish(); 30 } 31 32 }); 33 bt2= (Button) findViewById(R.id.bt2); 34 bt2.setOnClickListener(new View.OnClickListener() { 35 @Override 36 public void onClick(View view) { 37 String result = "没有"; 38 Intent intent = new Intent(); 39 intent.putExtra("result", result); 40 setResult(MainActivity.RESULT_CODE,intent); 41 finish(); 42 } 43 }); 44 } 45 }
多activity界面跳转并传递数据
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