隐式Intent调用

        //拨打电话
        bt1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri=Uri.parse("tel:1008611");
                Intent it=new Intent(Intent.ACTION_DIAL,uri);
                startActivity(it);
            }
        });

        //发送短信
        bt2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri=Uri.parse("smsto:10086");
                Intent it=new Intent(Intent.ACTION_SENDTO,uri);
                it.putExtra("sms_body","代开发票");
// it.setType("vnd.android-dir/mns-sms");
                startActivity(it);
            }
        });

        //打开网页
        bt3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri=Uri.parse("http://www.baidu.com");
                Intent it=new Intent(Intent.ACTION_VIEW,uri);
                startActivity(it);
            }
        });

        //打开图片
        bt4.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent it=new Intent(Intent.ACTION_VIEW);
                File file=new File("/sdcard/aaa.jpg");
                it.setDataAndType(Uri.fromFile(file),"image/*");
                startActivity(it);
            }
        });

        //打开音乐
        bt5.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent it=new Intent(Intent.ACTION_VIEW);
                File file=new File("/sdcard/bbb.mp3");
                it.setDataAndType(Uri.fromFile(file),"audio/*");
                startActivity(it);
            }
        });

        //安装应用
        bt6.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent it=new Intent(Intent.ACTION_VIEW);
                it.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                it.setDataAndType(Uri.parse("file:///sdcard/abc.apk"),"application/vnd.android.package-archive");
                startActivity(it);
            }
        });