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先在activity_second.xml里加个文本控件- <TextView
- android:layout_width="match_parent"
- android:layout_height="100dp"
- android:id="@+id/text1"/>
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然后把MainActivity.java文件里的button3按钮修改为:- button3.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View view) {
- Intent intent = new Intent(MainActivity.this,SecondActivity.class);
- intent.putExtra("extra_data","hello activity1");
- startActivity(intent);
- }
- });
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把secondactivity.java修改为:- package com.example.xinwei.test;
- import android.content.Intent;
- import android.support.v7.app.AppCompatActivity;
- import android.os.Bundle;
- import android.view.View;
- import android.widget.Button;
- import android.widget.TextView;
- public class SecondActivity extends AppCompatActivity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_second);
- Button btn =(Button)findViewById(R.id.btn);
- btn.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View view) {
- finish();
- }
- });
- Button btn1 = (Button)findViewById(R.id.btn1);
- btn1.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View view) {
- Intent intent = new Intent();
- intent.setAction(Intent.ACTION_DIAL);
- startActivity(intent);
- }
- });
- TextView text=(TextView)findViewById(R.id.text1);
- Intent intent1=getIntent();
- String string1 = intent1.getStringExtra("extra_data");
- text.setText(string1);
- }
- }
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就可以通过intent传值了,效果图为:
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