完成大写转换并返回结果
两个页面XML文件如下：
1.activity_main.xml: android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" >
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="转换" />
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
2.slave.xml
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="转为大写" />
两个代码如下 1.MainActivity.java
package com.leansmall.mydeom;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity {
private EditText eText;
private Button button;
private TextView tText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
eText=(EditText)this.findViewById(R.id.editText1);
tText=(TextView)this.findViewById(R.id.textView1);
button=(Button)this.findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Bundle bundle=new Bundle();
bundle.putString("value",eText.getText().toString());
Intent intent=new Intent(MainActivity.this,slave.class);
intent.putExtras(bundle);
startActivityForResult(intent, 10);
}
});
}
protected void onActivityResult(int requestCode,int resultCode,Intent Data) {
switch (requestCode)
{
case 10:
Bundle bundle=Data.getExtras();
tText.setText(bundle.getString("result"));
}
}
}
2.slave.java
package com.leansmall.mydeom;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class slave extends Activity {
private Button button;
String value;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.slave);
button=(Button)this.findViewById(R.id.button1);
Intent intent=this.getIntent();
Bundle bundle=intent.getExtras();
value=bundle.getString("value");
value=value.toUpperCase();
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent();
intent.putExtra("result", value);
slave.this.setResult(RESULT_OK,intent);
slave.this.finish();
}
});
}
}
注意：两个acitvity都需要在AndroidManifest.xml的application中注册才可以使用
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