Android Intent传值

一、MainActivity

<Button
android:id="@+id/button_first"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginLeft="50dp"
android:layout_marginTop="100dp"
android:text="测试intent传值"
>
</Button>

public class MainActivity extends AppCompatActivity {
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

button=(Button)this.findViewById(R.id.button_first);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this,NextActivity.class);
intent.putExtra("name","yuancan");
intent.putExtra("age",20);
intent.putExtra("address","湖南省长沙市");
startActivity(intent);
}
});

二、NextActivity

<TextView
android:id="@+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="100dp"
android:layout_marginTop="100dp"
/>

<TextView
android:id="@+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="100dp"
android:layout_marginTop="150dp"
/>

<TextView
android:id="@+id/text3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="100dp"
android:layout_marginTop="200dp"
/>

public class NextActivity extends AppCompatActivity {

private TextView textView1;
private TextView textView2;
private TextView textView3;

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

textView1 = (TextView)findViewById(R.id.text1);
textView2 = (TextView)findViewById(R.id.text2);
textView3 = (TextView)findViewById(R.id.text3);

Intent intent = getIntent();
String name = intent.getStringExtra("name");
Integer age = intent.getIntExtra("age", 0);
String address = intent.getStringExtra("address");

textView1.setText(name);
textView2.setText(String.valueOf(age));
textView3.setText(address);
}
}