先判斷是否存在地圖，存在就可以進入導航，沒有的話就預設進入市場下載app，程式碼如下：

i1.setOnClickListener(new View.OnClickListener() {
    @Override
public void onClick(View v) {
        new AlertDialog.Builder(mContext).setSingleChoiceItems(new String[]{"百度", "高德", "谷歌"}, 0, new DialogInterface.OnClickListener() {
            @Override
 
public void onClick(DialogInterface dialog, int which) {
                if (which == 0) {
                    baidu();
} else if (which == 1) {
                    gaode();
} else {
                    guge();
}
            }
        }).show();
}
});

 /*  * 檢查手機上是否安裝了指定的軟體
      * @param context
      * @param packageName：應用包名
 
              */
public static boolean isAvilible(Context context, String packageName) {
        //獲取packagemanager
final PackageManager packageManager = context.getPackageManager();
//獲取所有已安裝程式的包資訊
List<PackageInfo> packageInfos = packageManager.getInstalledPackages(0);
//用於儲存所有已安裝程式的包名
List<String> packageNames = new 
 
ArrayList<String>();
//從pinfo中將包名字逐一取出，壓入pName list中
if (packageInfos != null) {
            for (int i = 0; i < packageInfos.size(); i++) {
                String packName = packageInfos.get(i).packageName;
packageNames.add(packName);
}
        }
        //判斷packageNames中是否有目標程式的包名，有TRUE，沒有FALSE
return packageNames.contains(packageName);
}

    private void baidu() {
        if (isAvilible(mContext, "com.baidu.BaiduMap")) {//傳入指定應用包名
try {
//                          intent = Intent.getIntent("intent://map/direction?origin=latlng:34.264642646862,108.95108518068|name:我家&destination=大雁塔&mode=driving®ion=西安&src=yourCompanyName|yourAppName#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");
Intent intent = Intent.getIntent("intent://map/direction?" +
                        //"origin=latlng:"+"34.264642646862,108.95108518068&" +   //起點  此處不傳值預設選擇當前位置
"destination=latlng:" + 34.264642646862 + "," + 108.95108518068 + "|name:東莞" +        //終點
"&mode=driving&" +          //導航路線方式
"region=北京" +           //
"&src=我的app名字#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");
mContext.startActivity(intent); //啟動呼叫
} catch (URISyntaxException e) {
                Log.e("intent", e.getMessage());
}
        } else {//未安裝
            //market為路徑，id為包名
            //顯示手機上所有的market商店
Toast.makeText(mContext, "您尚未安裝百度地圖", Toast.LENGTH_LONG).show();
Uri uri = Uri.parse("market://details?id=com.baidu.BaiduMap");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
mContext.startActivity(intent);
}
    }

    private void gaode() {
        if (isAvilible(mContext, "com.autonavi.minimap")) {
            try {
                Intent intent = Intent.getIntent("androidamap://navi?sourceApplication=我的app名字&poiname=廣州&lat=" + 34.264642646862 + "&lon=" + 108.95108518068 + "&dev=0");
mContext.startActivity(intent);
} catch (URISyntaxException e) {
                e.printStackTrace();
}
        } else {
            Toast.makeText(mContext, "您尚未安裝高德地圖", Toast.LENGTH_LONG).show();
Uri uri = Uri.parse("market://details?id=com.autonavi.minimap");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
mContext.startActivity(intent);
}
    }

    private void guge() {
        if (isAvilible(mContext,"com.google.android.apps.maps")) {
            Uri gmmIntentUri = Uri.parse("google.navigation:q="+34.264642646862 +","+108.95108518068 +", + Sydney +Australia");
Intent mapIntent = new Intent(Intent.ACTION_VIEW, gmmIntentUri);
mapIntent.setPackage("com.google.android.apps.maps");
mContext.startActivity(mapIntent);
}else {
            Toast.makeText(mContext, "您尚未安裝谷歌地圖", Toast.LENGTH_LONG).show();
Uri uri = Uri.parse("market://details?id=com.google.android.apps.maps");
Intent   intent = new Intent(Intent.ACTION_VIEW, uri);
mContext.startActivity(intent);  }
    }