1.package com.huawei;
2.
3.
4.import android.app.Activity;
5.import android.content.ComponentName;
6.import android.content.Intent;
7.import android.os.Bundle;
8.import android.view.View;
9.import android.view.View.OnClickListener;
10.import android.widget.Button;
11.
12.public class Test extends Activity {
13.    /** Called when the activity is first created. */
14.    @Override
15.    public void onCreate(Bundle savedInstanceState) {
16.        super.onCreate(savedInstanceState);
17.        setContentView(R.layout.main);
18.        Button btn = (Button) findViewById(R.id.btn);
19.        btn.setOnClickListener(new OnClickListener() {
20.
21.            @Override
22.            public void onClick(View v) {
23.//组件名称，第一个参数是包名，也是主配置文件Manifest里设置好的包名
24.第二个是类名，要带上包名
25.
26.                ComponentName com = new ComponentName("com.huawei", "com.huawei.Test1");
27.                Intent  intent = new Intent();
28.//设置部件
29.                intent.setComponent(com);
30.                Test.this.startActivity(intent);
31.            }
32.        });
33.    }
34.}  

Intent i = new Intent();ComponentName comp = new ComponentName("com.android.camera","com.android.camera.GalleryPicker");i.setComponent(comp);i.setAction("android.intent.action.VIEW");startActivity(i);

Intent mIntent = new Intent();ComponentName comp = new ComponentName("com.android.camera","com.android.camera.Camera");mIntent.setComponent(comp);mIntent.setAction("android.intent.action.VIEW");startActivity(mIntent);

Intent intent = new Intent();ComponentName cn = new ComponentName("com.android.htmlviewer", "com.android.htmlviewer.HTMLViewerActivity");intent.setComponent(cn);Uri uri = Uri.fromFile(new File("/sdcard/demo.txt"));intent.setDataAndType(uri, "text/plain");startActivity(intent);